The afternoon is the time of day that starts mid-day and ends in the evening. If you have an afternoon appointment, its probably some time between 12:00 and 5:00 p.m. Its pretty much agreed that the afternoon begins after noon, or 12:00 p.m., but when the afternoon ends and evening begins is a bit more vague.

Similarly, which is correct in the afternoon or on the afternoon? Senior Member. In your example, on the afternoon of that day = (on) that days afternoon = (on) that day, in the afternoon = in the afternoon (on) that day.

Consequently, is 4pm in the afternoon or evening?

Both Good afternoon and Good evening are perfectly appropriate greetings at 6pm. Pick one, and dont overanalyze it. If you say Good evening at 4pm, or Good afternoon at 8pm, you might get funny looks, but near the boundary, either is fine.

Is 11am an afternoon?

Using numbers from 1 to 12, followed by am or pm, the 12-hour clock system identifies all 24 hours of the day. For example, 5 am is early in the morning, and 5 pm is late in the afternoon; 1 am is one hour after midnight, while 11 pm is one hour before midnight.